1443716

Appears in sequences

• Number of permutations of length n which avoid the patterns 2134, 3421, 4123.at n=25A116759
• Number of nX4 0..3 arrays with no element equal to the sum of elements to its left or the sum of elements above it or the sum of the elements diagonally to its northwest or the sum of the elements antidiagonally to its northeast, modulo 4.at n=9A240246